Outdoor Solar Combiner Box Heavy Duty PV Circuit Breaker Distribution Enclosure
Product Overview
Optimize and protect your solar energy harvest with our Heavy-Duty Outdoor Solar Combiner Box. Engineered specifically for residential and commercial Photovoltaic (PV) systems, this enclosure acts as the central hub for merging multiple solar string inputs into a single DC output.
Equipped with industrial-grade circuit breakers and surge protection, this distribution enclosure ensures your inverter and solar panels remain safe from overcurrent, short circuits, and lightning strikes. Built for longevity, it thrives in the most extreme rooftop and field environments.
Technical Specifications
| Parameter |
Specification |
| Max DC Voltage |
500V / 1000V / 1500V Options |
| Circuit Breaker Type |
Heavy-Duty DC MCB (Pre-installed) |
| Surge Protection (SPD) |
Type II DC Surge Arrester |
| Enclosure Material |
Reinforced UV-Stabilized Polycarbonate / ABS |
| Protection Rating |
IP65 / IP66 Waterproof & Dustproof |
| Operating Humidity |
0-95% Non-condensing |
| Compliance |
TUV, CE, RoHS, ISO9001 |
Performance Features
Advanced Circuit Protection
Every unit comes pre-fitted with high-voltage DC circuit breakers. These heavy-duty breakers provide reliable thermal-magnetic tripping to protect your PV strings from backflow and overcurrent, significantly reducing the risk of electrical fires.
Specialized PV Surge Arresters
To safeguard your expensive inverter from atmospheric disturbances, our combiner box includes a dedicated DC Surge Protective Device (SPD). It effectively redirects high-voltage surges caused by lightning strikes safely to the ground.
Thermal Management & Durability
Constructed from flame-retardant, high-impact materials, the enclosure is designed to dissipate heat efficiently. It remains structurally sound in temperatures ranging from -25 °C to +60°C, ensuring performance during peak summer solar production.
Plug-and-Play Installation
- Pre-Wired Internal Layout: Saves up to 50% on installation time
- Waterproof Cable Glands: High-tension glands ensure a perfect seal around DC cables
- Transparent Inspection Window: Allows technicians to verify breaker status without opening the main seal, maintaining the internal IP rating
Key Applications
- Residential Rooftop Solar: Consolidate wiring from multiple panel arrays into a single down-lead
- Off-Grid Energy Systems: Protect battery charging circuits and solar controllers
- Commercial Solar Farms: Scalable solution for managing high-current distribution
- EV Charging Integration: Safe DC management for solar-integrated vehicle charging stations
Safety & Quality Assurance
- UV Resistance: Tested for 1000+ hours of direct UV exposure to prevent material brittleness
- Corrosion Proof: Ideal for coastal or high-salinity environments where metal boxes often fail
- Anti-Theft Design: Features a lockable latch system to protect internal components in public or remote locations
Frequently Asked Questions
Q: How many solar strings can this box handle?
A: We offer configurations ranging from 1-string up to 24-string inputs. Please specify your system requirements when ordering.
Q: Does this box support 1500V systems?
A: Yes, our heavy-duty series includes specialized components rated for 1500V utility-scale solar projects.
Q: Are the internal breakers replaceable?
A: Yes, the box uses standard 35mm DIN rail mounting, allowing for easy replacement or upgrades of breakers and SPDs.